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【单选题】
n → π * 跃迁的吸收峰在下列哪种溶剂中测量,其最大吸收波长最大 ( ) The absorption peak of n → π * transition is measured in which of the following solvents to obtain the largest λ max ( )A.
水 Water
B.
甲醇 Methanol
C.
乙醇 Ethanol
D.
正已烷 N-hexane
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反馈参考答案：
举一反三
【单选题】The man is one of the best _____. He is _____ tasty dishes. [ ]
A.
cooks; cooking
B.
cookers; cooks
C.
cooks; cooks
D.
cooking; cooking
【简答题】创业的关键要素包括机会、资源和（ ）。A. 团队B、资金C、创意D、毅力B. 资金毅力C. 创意D. 毅力
【单选题】The thought of taking the exam again (depressed) her.
A.
剥夺
B.
把......驱逐出境
C.
使沮丧；按下；（经济）不景气
【单选题】The man is one of the best ______. He is _____ tasty dishes at the moment.
A.
cooks, cooks
B.
cooks, cooking
C.
cookers, cooking
D.
cooking, cooking
【单选题】She is fond of ________. She cooks for her family everyday.
A.
cooking
B.
cook
C.
cooks
【单选题】Qiu’s mother is a wonderful ________ She well. [ ]
A.
cook; cook
B.
cooker; cooks
C.
cook; cooks
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